You expect movie ratings to tell you whether a film contains nudity, sex, profanity or violence. Now cinemas in Sweden are introducing a new rating to highlight gender bias, or rather the absence of it.

To get an A rating, a movie must pass the so-called Bechdel test, which means it must have at least two named female characters who talk to each other about something other than a man.

“The entire Lord of the Rings trilogy, all Star Wars movies, The Social Network, Pulp Fiction and all but one of the Harry Potter movies fail this test,” said Ellen Tejle, the director of Bio Rio, an art-house cinema in Stockholm’s trendy SÃ¶dermalm district.

Bio Rio is one of four Swedish cinemas that launched the new rating last month to draw attention to how few movies pass the Bechdel test. Most filmgoers have reacted positively to the initiative. “For some people it has been an eye-opener,” said Tejle.